Ok, I got a whole story for it
The second the flod attacked one part of Halo, failures in random areas of Halo's system started to effect various parts of the giant ring. Bloodgulch's atmosphere coloration, artificially blue, failed turning it transparent showing the true lack of real nature. Their is still air there, the atmosphere itself didn't fail, so combat is still executeable

So, here's a layout of the mod.
The place is darker, the sun is still out there to give the sense that you're still in the middle of outer space. I put in some "famous figures" as far as Halo goes; the yellow warhog, the heretic banshee (skin by developer, a few edits by yours truly), and a home-brewed flame grenade.
Check it out!
BONZAi